Their conversion tables for nike running shoes have gaps, therefore I ordered a larger size than needed. When I recognised the problem I sent back the running shoes, claiming also the 30€ of shipping costs. What was the answer from sportsdirect? the product is out of stock so we will only reimburse you the value of the running shoes and nothing else. When I received their answer I checked the availability of the running shoes in their webiste and... guess what? they were available.